/Engine/Source/Runtime/Core/Public/Unix/UnixPlatformMisc.h
static [EAppReturnType::Type](API\Runtime\Core\GenericPlatform\EAppReturnType__Type) MessageBoxExt ( [EAppMsgType::Type](API\Runtime\Core\GenericPlatform\EAppMsgType__Type) MsgType, const TCHAR * Text, const TCHAR * Caption )